package com.cskaoyan.service;

import com.cskaoyan.mapper.AccountMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

/**
 * @author stone
 * @date 2022/05/27 14:35
 */
@Service
public class AccountServiceImpl implements AccountService{

    @Autowired
    AccountMapper accountMapper;

    @Override
    public void transfer(Integer fromId, Integer destId, Integer money) {
        Integer fromMoney = accountMapper.selectMoneyById(fromId) - money; //转账后的money
        Integer destMoney = accountMapper.selectMoneyById(destId) + money; //转账后的money

        accountMapper.update(fromId, fromMoney);
        int i = 1 / 0;
        accountMapper.update(destId, destMoney);
    }
}
